Merge PR #1492: Improve Module Test Coverage

* Merge pull request #1492: Improve Module Test Coverage
* Revert renaming of SignCheckDeliver [#1492]
* Remove named fields from stake unit tests & fix comments [#1492]
* update for tmlibs->tendermint/libs
* Remove tmlibs dependency

examples/democoin/app/app_test.go

@@ -4,14 +4,12 @@ import (
 	"os"
 	"testing"
 
-	"github.com/stretchr/testify/require"
-
 	"github.com/cosmos/cosmos-sdk/examples/democoin/types"
 	"github.com/cosmos/cosmos-sdk/examples/democoin/x/cool"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/wire"
 	"github.com/cosmos/cosmos-sdk/x/auth"
-
+	"github.com/stretchr/testify/require"
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/crypto"
 	dbm "github.com/tendermint/tendermint/libs/db"

examples/democoin/x/cool/app_test.go

@@ -3,15 +3,13 @@ package cool
 import (
 	"testing"
 
-	"github.com/stretchr/testify/require"
-
-	abci "github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/crypto"
-
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/x/auth"
-	"github.com/cosmos/cosmos-sdk/x/auth/mock"
 	bank "github.com/cosmos/cosmos-sdk/x/bank"
+	"github.com/cosmos/cosmos-sdk/x/mock"
+	"github.com/stretchr/testify/require"
+	abci "github.com/tendermint/tendermint/abci/types"
+	"github.com/tendermint/tendermint/crypto"
 )
 
 var (

examples/democoin/x/pow/app_test.go

@@ -7,8 +7,8 @@ import (
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/x/auth"
-	"github.com/cosmos/cosmos-sdk/x/auth/mock"
 	"github.com/cosmos/cosmos-sdk/x/bank"
+	"github.com/cosmos/cosmos-sdk/x/mock"
 
 	abci "github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/crypto"